How about eating slightly more than you do now, and add a couple of protien shakes? That shouldn't make you a fatty and give you slight surplus you need for a slow bulk. Just avoid a dirty bulk at...
I know what you mean, it's bittersweet. I have 2 sets of clothes, like a fat set and a fit set; typically in a year I'd cycle between the 2, until I got really out of shape and even the fat clothes...